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Abstract
Aeromonas hydrophila is a significantly important pathogen causing major diseases in humans and fresh water fish. The outer membrane proteins (OMP) which are strong immunogens have been reported to act as adhesins aiding in the attachment of enteropathogenic bacteria. It is of interest to investigate the role of OMP in pathogenesis and their potential as vaccine candidates. In our laboratory, we cloned the gene encoding channel protein LamB porin of A. hydrophila. DNA sequence analysis revealed a full length gene of 1345 bp having a high level of homology with the lamB gene of different bacteria. Open reading frame of A. hydrophila lamB consists of a signal peptide of 25 amino acids, two protein translation start sites ATG present at the 31st and 37th base pairs, a translation termination codon, TAA at 1333rd base pair.
Acknowledgements
Dr I. Karunasagar, College of Fisheries, Mangalore, Karnataka, India is gratefully acknowledged for providing A. hydrophila EUS112 culture. This work is supported by a research grant from the Department of Biotechnology, New Delhi, India to AD.